xcode 如何增加 UITextView 中的行间距
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How to increase spacing between lines in UITextView
提问by nitz19arg
How to increase spacing between lines in UITextView?
如何增加 UITextView 中的行间距？
I wish to use default system font,i.e., Helvetica with size 15.
我希望使用默认系统字体，即大小为 15 的 Helvetica。
回答by jungledev
Declare you implement the protocol by adding
通过添加声明您实现了协议
<NSLayoutManagerDelegate>
<NSLayoutManagerDelegate>
to your interface. Then, set:
到您的界面。然后，设置：
yourTextView.layoutManager.delegate = self;
yourTextView.layoutManager.delegate = self;
Then override this delegate method:
然后覆盖这个委托方法：
- (CGFloat)layoutManager:(NSLayoutManager *)layoutManager lineSpacingAfterGlyphAtIndex:(NSUInteger)glyphIndex withProposedLineFragmentRect:(CGRect)rect
{
return 5; // Line spacing of 19 is roughly equivalent to 5 here.
}
UPDATE:
I recently discovered that this can also be done using the NSMutableParagraphStyle setLineSpacing:API.
更新：我最近发现这也可以使用NSMutableParagraphStyle setLineSpacing:API来完成。
In an effort to always provide useful copy-paste code-snippet awesomeness, here you go!
为了始终提供有用的复制粘贴代码片段，非常棒，给你！
NSMutableParagraphStyle *myStyle = [[NSMutableParagraphStyle alloc] init];
[myStyle setLineSpacing:myLineSpacingInt];
[myString addAttribute:myDesiredAttribute value:myStyle range:myDesiredRange];
[myViewElement setAttributedText:myString];
^myViewElementcan be a UITextField, UILabel, or UITextView.
^myViewElement可以是UITextField, UILabel, 或UITextView。
回答by Rami
In IOS6+ you can set the typing attributes for a UITextView
在 IOS6+ 中，您可以为 UITextView 设置输入属性
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
[paragraphStyle setLineSpacing:lineSpacing];
NSDictionary *attrsDictionary = [NSDictionary dictionaryWithObject:paragraphStyle forKey:NSParagraphStyleAttributeName];
[textView setTypingAttributes:attrsDictionary];
